{"product_id":"mb-556xpnc-stdx-bbc-xp-series-main-bearings","title":"MB 556XPNC STDX BBC XP Series Main Bearings","description":"The King MB 556XPNC STDX is a premium set of XP Series main bearings developed by King Bearings for demanding racing applications such as circle track, drag racing, and off-shore use, particularly those involving steel crankshafts subjected to high loads and long duration endurance. These bearings utilize a Tri-Metal Copper-lead construction with a Hardened Overlay, enhanced by King's innovative pMaxBlack™ coating for increased hardness.\n\nFurther enhancing their performance, the XP Series bearings are topped with the pMaxKote™ ceramic nano-composite polymer coating. This advanced coating significantly improves wear and seizure resistance without altering the bearing's original wall thickness dimensions. The design also incorporates narrower main bearings compared to typical OE specifications, making them suitable for crankshafts with large journal fillet radii. Each bearing is finished with a .001 Oversize for additional clearance.","brand":"King \/","offers":[{"title":"Default Title","offer_id":52686467465528,"sku":"KNG-MB-556XPNC-STDX","price":143.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/658753245.webp?v=1784874134","url":"https:\/\/store.motormia.co\/products\/mb-556xpnc-stdx-bbc-xp-series-main-bearings","provider":"MOTORMIA","version":"1.0","type":"link"}